#include	"apue.h"
#include	<setjmp.h>

static	void	f1(int, int, int, int);
static	void	f2(void);
static	jmp_buf	jmpbuffer;
static	int	globval;

int
main(void)
{
	int		autoval;
	register int	regival;
	volatile int	volaval;	
	static	int	statval;

	globval = 1; autoval = 2; regival = 3; volaval = 4; statval = 5;

	if (setjmp(jmpbuffer) != 0)
	{
		printf("after longjmp:\n");
		printf("globval = %d, autoval = %d, regival = %d,"
			" volaval = %d, statval = %d\n",
			globval, autoval, regival, volaval, statval);
		exit(0);
	}

	/*
	 * Change variables after setjmp, but before longjmp.
	 */
	globval = 95; autoval = 96; regival = 97; volaval = 98;
	statval = 99;

	f1(autoval, regival, volaval, statval);				/* never returns */
	exit(0);
}

static void
f1(int i, int j, int k, int l)
{
	printf("in f1():\n");
	printf("globval = %d, autoval = %d, regival = %d,"
		" volaval = %d, statval = %d\n", globval, i, j, k, l);
	f2();
}

static void
f2(void)
{
	longjmp(jmpbuffer, 1);
}
